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Question

What is the difference between auxin and giberellins?


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Solution

Auxin:

Auxins are a group of naturally occurring and artificially synthesised plant hormones.

Gibberellins:

Gibberellins are plant hormones that regulate stem elongation, germination, dormancy, flower development, flowering, and leaf fruit senescence.

Auxin

Gibberellins

1. They are single or double unsaturated structures with a side chain.1. Gibberellins are saturated tetracyclic gibbane structures without a side chain.
2. They are found only in higher plants. 2. They are found both in higher plants and fungi.
3. It leads to apical dominance3. It does not cause apical dominance
4. It does not promote seed dormancy, and bud dormancy4. It promotes bud dormancy and seed dormancy.
5. Does not cause bolting5. It causes bolting in plants.
6. It help in root formation6. It does not help in root formation
7. Its main functions are axial elongation, cell elongation, and cell differentiation.7. Its main functions are seed germination, flowering sex expression

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